78860748465 has 24 divisors (see below), whose sum is σ = 136716995688. Its totient is φ = 42051363840.

The previous prime is 78860748431. The next prime is 78860748467. The reversal of 78860748465 is 56484706887.

78860748465 is a `hidden beast` number, since 78 + 8 + 60 + 7 + 48 + 465 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6458854689 + 72401893776 = 80367^2 + 269076^2 .

It is not a de Polignac number, because 78860748465 - 2²⁰ = 78859699889 is a prime.

It is a super-3 number, since 3×78860748465³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (78860748467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92385 + ... + 407745.

It is an arithmetic number, because the mean of its divisors is an integer number (5696541487).

Almost surely, 2^78860748465 is an apocalyptic number.

It is an amenable number.

78860748465 is a deficient number, since it is larger than the sum of its proper divisors (57856247223).

78860748465 is a wasteful number, since it uses less digits than its factorization.

78860748465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320929 (or 320926 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 63.

The spelling of 78860748465 in words is "seventy-eight billion, eight hundred sixty million, seven hundred forty-eight thousand, four hundred sixty-five".